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From: Vyacheslav Yurkov <uvv.mail@gmail.com>
To: Miklos Szeredi <miklos@szeredi.hu>, Amir Goldstein <amir73il@gmail.com>
Cc: linux-unionfs@vger.kernel.org,
	Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>
Subject: [PATCH v3 1/3] ovl: disable decoding null uuid with redirect dir
Date: Thu, 27 May 2021 19:45:45 +0200	[thread overview]
Message-ID: <20210527174547.109269-1-uvv.mail@gmail.com> (raw)

From: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>

Currently decoding origin with lower null uuid is not allowed unless user
opted-in to one of the new features that require following the lower inode
of non-dir upper (index, xino, metacopy). Now we add redirect_dir too to
that feature list.

Signed-off-by: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>
---
 fs/overlayfs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index b01d4147520d..97ea35fdd933 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1600,7 +1600,7 @@ static bool ovl_lower_uuid_ok(struct ovl_fs *ofs, const uuid_t *uuid)
 	 * lower inode of non-dir upper.
 	 */
 	if (!ofs->config.index && !ofs->config.metacopy &&
-	    ofs->config.xino != OVL_XINO_ON &&
+	    !ofs->config.redirect_dir && ofs->config.xino != OVL_XINO_ON &&
 	    uuid_is_null(uuid))
 		return false;
 
-- 
2.25.1


             reply	other threads:[~2021-05-27 17:46 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27 17:45 Vyacheslav Yurkov [this message]
2021-05-27 17:45 ` [PATCH v3 2/3] ovl: add ovl_allow_offline_changes() helper Vyacheslav Yurkov
2021-05-27 17:45 ` [PATCH v3 3/3] ovl: do not set overlay.opaque for new directories Vyacheslav Yurkov
2021-05-28 11:38   ` Amir Goldstein
2021-06-01  6:53     ` Yurkov, Vyacheslav
2021-06-01  8:33       ` Amir Goldstein
2021-06-01 16:29         ` Yurkov, Vyacheslav
2021-06-01 18:29           ` Amir Goldstein
2021-06-04 12:32             ` Amir Goldstein
2021-06-04 14:50               ` Yurkov, Vyacheslav
2021-06-04 19:18                 ` Amir Goldstein
2021-07-19 14:29   ` Miklos Szeredi

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